Just FYI: The texture size limitation has nothing to do with the iOS version. It's a limitation imposed by the GPU. Here's the corresponding documentation. The PowerVR MBX GPU (iPhone, iPhone 3G and 1st and 2nd generation iPod touch) can have 1024x1024 max. texture size. Basically all newer devices support up to 2048x2048.
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bummzackFeb 6 '12 at 17:27

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